# Backups suddenly failing - 4 machines now **URL:** \ **Category:** Support\ **Created:** [November 22, 2018, 5:19pm UTC](https://forum.duplicati.com/t/backups-suddenly-failing-4-machines-now/5379 "2018-11-22T17:19:19Z")\ **Posts on this page:** 1\ **Showing post:** 19
**Author:** ![ts678](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/t/8491ac/32.png) [@ts678](https://forum.duplicati.com/u/ts678)\ **Post date:** [November 25, 2018, 11:52pm UTC](https://forum.duplicati.com/t/backups-suddenly-failing-4-machines-now/5379/19 "2018-11-25T23:52:41Z")
> [@Taomyn](#): > > Ah ok, so I got that now. I tried the BackendTester and it wanted to delete everything, and I then ran just the Test - it asked me for my passphrase and nothing seems to be happening. I can enter more characters and returns, and it just sits there. This is on my Fedora box btw. I don’t know what to say about that. I just tested to a `b2://` URL from Windows and Linux, and mine worked, however it said `*** Remote folder is not empty, aborting` when I tried to reuse a bucket and folder, and could not create a new bucket but could create a new folder (I just changed the name from an old URL). Got a few upload failures both cases (regular Duplicati would probably just have retried those up to 5 times). > [@ludrus](#): > > I ended up deleting the three dlist files that were reporting a file size mismatch. Then I deleted and recreated the database. I was able to run a successful backup after that. I think Wasabi was having some kind of issue because I was having problems deleting objects. Seems to be okay for now at least for me. That’s what I would have suggested (maybe after retrying a plain recreate again). You need that database. Thinking about an earlier statement I made, I think that test of SharpAESCrypt with `do` and WinRAR was an appropriate proof of a corrupt file, because you decrypted (as much as could be done) before trying unzip. You might want to at least run one --log-file log to see if you get any Warnings about bad lengths, like I [did](https://forum.duplicati.com/t/backups-suddenly-failing-4-machines-now/5379/9). Running with a higher [–backup-test-samples](https://duplicati.readthedocs.io/en/latest/06-advanced-options/#backup-test-samples) than the rather low default of 1 for awhile might also be good. One thing I forgot to ask is whether anybody was on a recent Duplicati version. There was an [update](https://forum.duplicati.com/t/backup-wont-complete-with-2-0-4-4/5397/5) of the AWSSDK DLL in 2.0.3.24 (I think), and I’m hoping it still works fine with all of the S3-compatible providers… --- _[View the full topic](https://forum.duplicati.com/t/backups-suddenly-failing-4-machines-now/5379)._